Determination of radiative lifetimes of neutral sulphur by time-resolved three-photon VUV laser spectroscopy Z. S. Li, A. Persson, S. Svanberg, H. P. Garnir and E. Biémont Eur. Phys. J. D, 2 1 (1998) 11-14 Published online: 15 April 1998 DOI: 10.1007/s100530050103